Step 1: Understanding the Concept:
This problem relates the magnetic moment of a bar magnet to its pole strength and magnetic length. The magnetic moment is a vector quantity that represents the overall magnetic strength and orientation of a magnet.
Step 2: Key Formula or Approach:
The magnetic moment ( ) of a bar magnet is defined as the product of its pole strength ( ) and its magnetic length ( ).
The magnetic length ( ) is the distance between the two poles of the magnet.
Step 3: Detailed Explanation:
Given data:
Magnetic moment, .
Distance between poles (magnetic length), .
Calculation:
We need to find the pole strength . Rearranging the formula:
Substitute the given values:
Step 4: Final Answer:
The pole strength of the bar magnet would be 25 A m.